USPS Location
- Chadwick
218 Main St, Chadwick, IL 61014
815-684-5170
Bulk Mail Acceptance, Bulk Mail Account Balance, Bulk Mail New Permit, Business Reply Mail Account Balance, Business Reply Mail New Permit, General Delivery, Money Orders (Domestic), Money Orders (Inquiry), PO Box Online, Pickup Accountable Mail, Pickup Hold Mail, Priority Mail International